A method for attitude error correction of geomagnetic all-element sensor

An error correction and sensor technology, used in instruments, scientific instruments, electrical/magnetic exploration, etc., can solve problems such as orthogonality error, temperature drift, and the accuracy of measurement values, and solve problems with low measurement accuracy. Effect

An error correction and sensor technology, used in instruments, scientific instruments, electrical/magnetic exploration, etc., can solve problems such as orthogonality error, temperature drift, and the accuracy of measurement values, and solve problems with low measurement accuracy. Effect

CN109407159BActive Publication Date: 2020-04-21CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • A method for attitude error correction of geomagnetic all-element sensor
  • A method for attitude error correction of geomagnetic all-element sensor
  • A method for attitude error correction of geomagnetic all-element sensor

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Embodiment Construction

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0052] Please refer to figure 1 , an embodiment of the present invention provides a method for correcting an attitude error of a geomagnetic all-element sensor. The geomagnetic all-element sensor includes a total field sensor and a uniform magnetic field generator surrounding the total field sensor. The uniform magnetic field generator includes a positive Intersecting the first coil C1 and the second coil C2, the first coil C1 and the total field sensor are placed on the magnetic meridian, comprising the following steps:

[0053] S1 uses the attitude sensor to measure the attitude deflection angle α of the geomagnetic all-element sensor, and uses the total field sensor to measure the geomagnetic field F of the measurement point;

[0054] S2 sequentiall...

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Abstract

The invention provides a geomagnetic total element sensor attitude error correction method, comprising: S1, measuring a geomagnetic total element sensor attitude deflection angle [alpha] and a measurement point geomagnetic field F; S2, sequentially feeding equal current in opposite directions to a first coil C1, respectively measuring deflection magnetic fields FI+ and FI-; S3, sequentially feeding equal current in opposite directions to a second coil C2, respectively, and respectively measuring the deflection magnetic fields FD+ and FD-; S4, calculating a variation correction value [delta]I'1of a magnetic inclination and a variation correction value [delta]D'1 of a magnetic declination; S5, calculating a magnetic inclination correction value I and a magnetic declination correction valueD, and a correction formula being I=I0+[delta]I'1, D=D0+[delta]D'1. The method has beneficial effects that a problem of low measurement accuracy caused by attitude changes in measurement of a geomagnetic total element sensor, so that the geomagnetic total element sensor can be applied in the fields of marine, aviation, and terrestrial measurement when attitude changes.

Description

technical field [0001] The invention relates to the field of magnetic field measurement, in particular to a method for correcting attitude errors of geomagnetic all-element sensors. Background technique [0002] Please refer to Figure 9 , the geomagnetic field is a vector field, which is composed of geomagnetic field T, horizontal component H, north component X, east component Y, vertical component Z, magnetic inclination I, magnetic declination D these seven elements. Compared with the traditional geomagnetic field observation and three-component observation, the geomagnetic full element contains more magnetic field information, which can accurately reflect the characteristics of the research object. In practical applications, appropriate magnetic field parameters need to be selected according to different scenarios. In addition, geomagnetic element data can be used for the drawing of geomagnetic maps, the study of paleomagnetism, and the monitoring of space weather. The...

Claims

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Application Information

Patent Timeline
21 Apr 2020
Publication
CN109407159B
IPC
G01V3/38; G01V3/40
CPC
G01V3/38; G01V3/40
Inventors
葛健; 霍治帆